Explain two ways that your skin protects against bacterial infection.

Why do these children grow out of this immunodeficiency? Explain your reasoning.

Which of the following give rise to platelets?

Which of the following gives rise to dendritic cell populations?

Based on the signaling image below, activation of which of the following molecules will lead to the release of calcium from the endoplasmic reticulum? Select all that may apply.

Name the appropriate antibody isotype(s) (IgA, IgD, IgE, IgG, IgM) for the following statement.  Include all that apply. –Is involved in mast cell degranulation

Name the appropriate antibody isotype(s) (IgA, IgD, IgE, IgG, IgM) for the following statement.  Include all that apply. –Can fix complement

Determine whether the following statement refers to humoral or cell-mediated immunity or both. –The major cells types are Tc and Th.

What complement pathway(s) do children mostly rely on when they are 6 to 12 months of age? Explain your reasoning using the data above.

Cytochrome c is released from the mitochondria through a Bax/Bak channel in the ­­­­_____ pathway of apoptosis.